This camera runs on solar power from the pictures it takes

Self-Powered Camera

Self-Powered Camera

Scientists invented a video camera that is powered by…light. Columbia University researchers have developed a self-powered camera whose pixels both record light and turn it into electricity.

According to engadget.com, the trick is the use of photodiodes (which are common in both cameras and solar panels) that are permanently set to collect energy, not simply conduct it.

As you can see from the blurry, goofy animation below, the existing technology won’t compete with the camera in your phone, let alone a pro DSLR. Columbia’s prototype captures just 1,200 black-and-white pixels, and it needs a lot of light just to keep running.

Even so, it’s promising. If scientists can refine the technology to work at multi-megapixel levels, you could see cameras that last a long time on battery, and might not need a battery at all.

This paper thin battery will charge your smartphone in 60 seconds

ultra-fast-charging battery

This new graphite battery will charge your smartphone in 60 seconds. Credit: Meng-Chang Lin & Hongjie Dai, Stanford University

Battery life problems are among the most common smartphone affliction. No matter how power efficient the hardware gets, manufacturers end up using all of it and more for improved displays, faster performance, and more features. Now scientists at Stanford University have come up with an ultra-fast-charging paper thin battery that can be produced on a mass scale. Bonus: the battery can charge your smartphone in 60 seconds.

“We have developed a rechargeable aluminum battery that may replace existing storage devices, such as alkaline batteries, which are bad for the environment, and lithium-ion batteries, which occasionally burst into flames,” said Hongjie Dai, professor of chemistry at Stanford, in a statement. “Our new battery won’t catch fire, even if you drill through it.”

According to Extreme Tech, the aluminum-ion battery contains a negatively charged anode and a positively charged graphite cathode. Researchers placed those two inside a flexible polymer-coated pouch with an ionic liquid electrolyte. Aluminum has always been a compelling material for battery design, but it’s been too difficult to work with. It’s inexpensive, not flammable, and could potentially have high capacities. The problem up until this point, the researchers said, is developing the right materials that could repeatedly produce sufficient voltage after multiple cycles of charging and discharging.

Current lithium-ion batteries in smartphones can take several hours to charge. Some manufacturers like Samsung and HTC have developed fast burst modes that give you 25 percent of initial battery life with just 15 minutes of charging, and have also baked in new slow-burn, emergency efficient modes to eke extra time out of the last few percentage points of battery life. But this new aluminum-ion battery prototype has “unprecedented charging times” down to just one minute. Plus, the researchers were able to charge and discharge the battery 7,500 times without loss of capacity, compared with 1,000 cycles or less for today’s packs.

The researchers said that in addition to phone batteries, the aluminum-ion design could also be used to store extra capacity in renewable power grids, and the two-volt output could also be an environmentally replacement for 1.5-volt disposable AA and AAA batteries.

And that’s where the research continues: That voltage, while better than the disposable batteries, is still only about half that what you need for a smartphone. It’s the last major hurdle, after inexpensive materials, safety, ultra-fast charging, and long life cycle. Here’s hoping they nail it, because at this point we’re all sick of having to charge our devices all the time.

Delhi University students show us how Metro trains can produce wind energy

energy from metro trains

The team, involving ten students of Physics and Computer Science departments, proposed setting up a turbine at an underground metro station to check if it can be successful in harnessing the wind.

Delhi University students found an innovative way of harnessing wind energy churned out by Metro trains to generate electricity.

According to IBN Live, the project, undertaken by Kalindi College, has also got the backing of Delhi Metro Rail Corporation (DMRC), which allowed the students to install a turbine on trial basis at one of the underground metro stations.

“While standing at a metro station one day, the students realised that the wind energy produced in the tunnel by these fast moving trains gets wasted, and they decided to find out how it can be harnessed,” says Dr Punita Verma, Principal Investigator of the project.

The team, involving ten students of Physics and Computer Science departments, proposed setting up a turbine at an underground metro station to check if it can be successful in harnessing the wind. DMRC officials found the project interesting and gave the nod to install a turbine at Chandni Chowk metro station.

“Without obstructing the operation, safety and security of Metro services, it was decided to put up turbine along the underground tracks at the mouth of tunnel where the maximum wind velocity available is 6.5 m/s.

“In the first phase, we installed a three-blade turbine and later a five-blade light rotor turbine with a cut-in speed of less than 1.5m/s. We connected it to a battery and measured the power it generates. We also discovered that different stations have different construction and the same turbines cannot be used at all the metro stations,” Verma said.

The project, which has was started by a different group of students in 2013, has received a grant of Rs 15 lakh from the university. While the first phase involved the research work, the DMRC engineers were later roped in to test the feasibility, who have asked the team to develop the concept further.

“We are now working on different designs of the turbines whose size, shape and orientation will be customised according to the wind velocity and frequency of trains at different stations. Once the design is approved by DMRC, turbine firms will be approached to make these turbines,” Verma says.

Community wind farm rises near Ithaca

wind farm

Community wind farm

For the past eight years, Marguerite Wells, an organic flower farmer, has quietly raised more than $1 million to build seven wind turbines on a hillside outside of Ithaca. During that time, she’s also had a lot of kitchen table discussions with neighbors worried about 475-foot turbines spinning in their backyards.

“This is a way we’re getting it done without any changes in legisation,” the 37-year-old Enfield resident said. “It’s just regular people doing something they want to happen. It’s just democracy by dollars.”

Large renewable projects often take years of planning, but Wells’ project in Tompkins County is unique because she has no energy industry background and has undertaken a major project large companies and investment groups take years to bring to fruition. She’s doing it, she says, to show that renewable energy projects are feasible, a good investment and important for the future of the energy grid.

According to Capital New York, Wells has already received many of the key state and local approvals a large project requires and expects the first holes for the turbines to be dug this summer. If completed, the Black Oak Wind Farm in the town of Enfield, about 20 miles west of Ithaca, will be the first community-owned wind farm in New York. And while its construction is still not guaranteed, landowners have agreed to site the wind turbines on their property.

At the same time, Black Oak has received the backing of the state as well as a major community institution.

Cornell University has agreed to purchase all of the power produced by the project. The New York State Energy Research and Development Authority will support the project for a decade by purchasing renewable energy credits.

NYSERDA will work to encourage more community projects like Black Oak, said Doreen Harris, senior project manager.

“We see this as a model for considering in terms of its replicability for New York,” she said. “NYSERDA sees a large role for communities and involvement in reaching the state’s targets.”

Wells said there were so few projects like hers, she had to travel to South Dakota to find another community-owned wind farm to copy. Now that she is so close to breaking ground, she said she expects this project won’t be the last time private citizens organize their own utility-scale renewable projects. They can use her ideas, and fit them around the unique needs of their community projects, she said.

Black Oak is relatively small. At 12 megawatts, it would provide enough power for about 5,000 homes. The site in Enfield has average wind speeds of 17 m.p.h., better for generating electricity than other state wind farms that have average wind speeds of 14 m.p.h.

The project will cost about $40 million to complete. Wells has raised at least $1 million, much of it from private citizens, including a number who lives near the farm. She said she recruited more than 100 like-minded investors in initial rounds of funding, including those who support clean energy and view it as a chance to make money. The bulk of the funding, she said, will come from banks and private equity firms who see the project as economically viable.

The project has been delayed a few times and has been cut in size from 20 megawatts to the current configuration. And while there is no guarantee Wells will get the money she needs in time to begin construction in just a few months, she said she is close to final deals with three major financial backers. She is also working on a payment in lieu of taxes, or PILOT, agreement with the Ithaca city school district, the town of Enfield and the Odessa Montour Central School District.

For Cornell, the project allows the school to move closer to a goal of zero carbon emissions by 2035.

“As we use more wind, we reduce our dependence on carbon-produced electricity,” KyuJung Whang, Cornell vice president for facilities services, said in a statement. “This is a major step toward Cornell becoming a carbon neutral campus.”

After announcing a fracking ban in December, Governor Andrew Cuomo said some of the areas that would have benefited from natural gas drilling could now receive clean energy projects. Environmental groups that have spent years mostly focused on fracking said they would turn their attention toward promoting renewable energy. Those efforts have yet to be rolled out.

Wells is ahead of both, though the state signed on to support her project in 2013 because it was economically competitive. Environmental groups have been slow to realize its promise, but Wells is traveling to Albany soon to meet with them to encourage more outreach to their members on investments in community renewables.

The project is also an example of what the state needs most to grow its renewable energy portfolio, private capital invested in major initiatives that can succeed in an open market without major subsidies. After years of stagnant growth, Cuomo has launched billions of dollars in clean energy initiatives, most with the aim of aligning solar, wind and other renewable sources with the market, so that they can exist without subsidies. The state’s Reforming Energy Vision initiative, which is being watched nationally, is designed to make the state energy markets more accomodating to renewable projects.

It’s also the type of clean energy resource, a utility-scale project, that the grid needs if it is to reduce carbon emissions 80 percent by 2050, as Cuomo has pledged. Wind projects have increased more than any other renewable energy under Cuomo, by about 600 megawatts to a total of 1,875 megawatts since 2010. Still, the state got just 23 percent of its power from renewables in 2014, far short of former governor George Pataki’s plan to get 30 percent of the state’s power from renewables by the end of this year.

Wells said it has helped that her project is near liberal Ithaca, a place where people appreciate renewable energy, she said. That made the tough sell of convincing people to have turbines as tall as a skyscraper spinning in their backyards.

“Ithacans take green energy so seriously, they know they can’t say ‘not in my county, in someone else’s county,’” she said.

Thus far, the project has received little support from the state’s most prominent environmental groups, Wells said, despite years of pitches.

Wells said getting popular public support, and showing people the investment power of renewable projects, is her next push. She has a meeting with green groups in Albany later this month, to get them on board with the project and to convince them to encourage their members to invest in the future of the energy grid.

“They haven’t seen anything like me and don’t know how to support me,” she said.

Singapore’s first 3D-printed urban solar electric car

solar-powered cars

NTU eco cars

Two solar-powered electric cars, designed by students from the Nanyang Technological University (NTU), were unveiled by the institution on Monday morning.

According to Channel News Asia, one of the two is the first car in Singapore to be made with 3D-printed parts. Its cabin, which can seat one driver, is made of 150 3D-printed components that have been glued together using epoxy adhesive.

“We are extremely proud to have designed and assembled a 3D-printed body shell for the electric car,” Associate Professor Ng Heong Wah said. “The 3D printed car body was pushing existing technology to the limits and we are so pleased that it has paid off.”

“Using the latest engineering techniques learnt from their studies in NTU, the students have developed innovations such as silicon solar cells that can be contoured to follow the car’s shape,” he added.

Undergraduate Ilmi Bin Abdul Wahab, who led the development of 3D-printed NV8, said: “We decided to go with a 3D-printed cabin made from lightweight plastic, as we wanted to maximise the internal space and driver’s comfort while still being able to keeping the weight to a minimum. Despite being an Urban Concept car, it is no slouch and can reach a top speed of 60km/h, while maintaining low energy consumption.”

Co-designer Ng Jun Wen explained the unique honeycomb design for NV8: “For it to be lightweight, thin and yet strong, we integrated a honeycomb structure and a unique joint design to hold the parts together. When seen against the light, the structure has a translucent see-through effect, like a dragonfly wing.”

According to NTU, NV8 will participate in the Shell Eco-marathon Asia competition this year, under the Urban Concept category. Teams with more “roadworthy” fuel-efficient vehicles fall in this category, it said. The competition challenges students to design, build and drive a vehicle that can travel the furthest distance using the least amount of energy.

The second eco-car features hand-made silicon solar cells

The students have also built the NTU Venture 9 (NV9), a three-wheeled racer, which can “take sharp corners with little loss in speed” due to its unique tilting ability inspired by motorcycle racing, the university said.

The car, featuring hand-made silicon solar cells, will be NTU’s entry in the Prototype category at the Shell competition. Teams enter futuristic prototypes focused on maximising fuel efficiency through innovative design elements in the Prototype category.

By developing the silicon solar cells innovation, Prof Ng said it allows for “maximum harvesting of the solar energy and a tilting mechanism” in NV9 that results in avoiding the loss of speed.

Explaining the inspiration behind their prototype, NV9 Team Manager, Winston Tan, said: “We took the tilting mechanism inspiration from motorcycle racing, where racers would lean left or right during sharp turns to maintain their handling and speed. For the car’s body, we aimed for it to be as streamlined as possible.”

The two NTU teams consist of 16 students from the various engineering schools. The cars were designed from scratch and students spent over a year to build them. Shell Eco-marathon Asia will take place in Manila from Feb 26 to Mar 1.

New iPhone 7 Rumors: Waterproof and Solar-Powered?

solar powered iphone

Solar-powered iPhone 7?

Although the Apple iPhone 6 is quite new, rumors have been flying about iPhone 7. Fans and analysts are clamoring to know what the iPhone 7 will bring to the table. Some think that the new device will be waterproof and solar-powered.

Currently, it’s unknown whether the smartphone will see release in 2015 or 2016, thefusejoplin.com writes. That hasn’t stopped Android fans from feeding the rumor mill, and some interesting rumors have come from various sources. Most of these rumors are intriguing, so let’s take a quick look at some of the most common rumors flying around right now.

Rumor: A Waterproof Device

Most flagship Android devices are waterproof or water-resistant to some degree. However, Apple has never implemented such a feature on its iconic smartphone. Analysts expect the company to make the iPhone 7 waterproof after the iPhone 6 was released without this added layer of protection. A waterproof device would allow users to handle their smartphones in the rain or other wet conditions without worries. Of course, consumers would buy the device in droves if it comes with added durability like this.

Rumor: A Solar Power Feature

No smartphones have implemented solar power into their designs. Doing so isn’t cost-effective, and the technology isn’t there yet. Then again, this rumor describes an iPhone 7 that improves its battery life by utilizing solar power. Such an add-on wouldn’t let the device completely recharge itself, but it would give the smartphone some extra juice. Since Apple customers are used to paying a premium for their devices, this rumor only seems out there because of the actual idea rather than its price.

Rumor: Same Old A8 Processor

Unfortunately, a horrifying rumor surrounding the iPhone 7 states that the device will ship with the A8 processor. That’s the same processor found on current iPhone models, and consumers won’t like that. The processor packs a powerful punch, especially for graphics, but consumers expect improvements with each generation. Apple might keep the A8 for the iPhone 6S models, but it’s hard to imagine that the company won’t unveil the A9 chip for the next generation of devices.

Rumor: Double The Amount of RAM

A major complain of the current iPhones revolve around their available 1GB of RAM. Most Android devices feature 2GB to 4GB of RAM, so Apple needs to catch up. According to the rumor mill, 2GB of RAM will be implemented into the iPhone 7, but this could hit the iPhone 6S beforehand. More RAM can only help iOS 8 and its future editions. The fact of the matter is that iPhones could benefit from more RAM because they’ll be able to multitask better than before, which is essential for some smartphone users.

Will An iPhone 6S Come Before The iPhone 7?

In the end, many of these rumored features for the iPhone 7 might actually come in the form of the iPhone 6S. Apple hasn’t released details about the “S” upgrade to the iPhone 6 and 6 Plus, though. Such upgrade models have been implemented for multiple generations now, though. For that reason, Apple fans shouldn’t expect an iPhone 7 until 2016 at the earliest. A desire to better compete with Android devices could lead Apple to changing plans and releasing the smartphone in 2015, but only Apple knows if that’s the case.

Engineering students invented a device that extracts energy from wireless signals

collect energy from wifi signals

The research team: Alexander Katko (left) and Allen Hawkes

Two Engineering students invented a cheap device that collects stray microwave signals in the air and converts them into power for charging batteries. The invention works similar to solar panels, the researchers claim that their converter can collect stray signals anything wireless, including satellite signals, sound or even Wi-Fi.

They used fiberglass and copper energy conductors engineered to capture various forms of wave energy and tune them for useful applications. The research team created a series of fiber glass and copper energy conductors on a circuit board that converts microwaves into 7.3V of electrical energy,according to gadgetronicx2.rssing.com.

“We had been getting efficiency around 6 to 10%, but with this design we were able to dramatically improve energy conversion to 37% which is comparable to what achieved in solar cells”, said Allen Hawkes.

energy from wifi signals

This was the five cell metamaterial array developed by the engineers and the beauty of this design is that the basic building blocks (metamaterial cell) are self contained and additive. So one can simply add more blocks to increase the electric power based on their needs. This device could be tuned for a multitude of frequencies to collect different types of energy including vibration and sound energy.

The researchers further added that this power harvesting device could integrate into modern mobile phones, allowing it to recharge itself from the signal obtained through towers or satellites.

In a world where we are swimming in microwave signals, this device could provide a vast amount of energy which we need on daily basis. Imagine charging your smartphone through Wi-Fi signal or by means of stray signals from the Satellite overhead. This cheap and effective device could be a best solution to meet the energy needs of the world in our upcoming future.